The Mozilla developers have announced the release of version 3.5.8 and 3.0.18 of their open source Firefox web browser. In addition to the usual bug fixes and stability improvements, the updates address a total of five vulnerabilities, three of them rated critical.

The critical security problems relate to the Gecko web rendering engine used in Firefox and other Mozilla-based products, the HTML parsers and the Web Worker Array. According to Mozilla, all three of the critical vulnerabilities could lead to a crash, possibly leading to memory corruption and the execution of arbitrary code.

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